SIENDERU

CONNECTIONS FOR TOMORROW

From our beginnings designing motorways to implementing the most cutting-edge traffic strategies, we have been working toward a bright and successful future for 65 years.

We are among the largest civil engineering companies in Slovenia. We provide consulting services, conduct studies and research, as well as plan and design in the fields of transport, the environment, hydrotechnical engineering, civil structures, and geodesy.

We excel at the entire planning process

At the company PNZ d.o.o., we are proud of our 65-year history of planning new roads. From the first motorway in the former Yugoslavia to the most cutting-edge development strategies for transport infrastructure in Slovenia, from an idea to construction: we are distinguished by our long tradition, which we are continually building upon with contemporary skills and expertise, and the integrity of our offer. This includes everything from developing traffic models and conducting traffic studies to planning in the fields of roads, railways, ports, airports, energy infrastructure, structures, hydrotechnical engineering and traffic ecology, and allows for projects to be carried out from the initial idea to the final construction. With our long-time partners, we work on successful projects in architecture, landscape architecture, spatial planning and urban planning. 

Our partners include highly reputable firms such as PTV, Ineco, AF-Cityplan, SATRA, IER, UIRS, UL-FGG, UM-FGPA, UZ-GF and IJS. Over 100 experts from various fields take part in our projects depending on the needs of each project, using the most state-of-the-art engineering and programming equipment.

40.5

mio €

Total annual turnover in the last 10 years

> 2

bil. €

Total investment in planned projects in the last 10 years

65

years

We have been providing new connections for 65 years

Vision and mission

Development of modern and innovative answers to the most challenging questions in the fields of transport and the environment, which support economic development and contribute to a good quality of life and the environment.

Providing consulting, conducting studies and research, and planning and designing in the fields of transport, the environment, hydrotechnical engineering, civil structures, and geodesy for clients at state and local level. With our expertise and decades of experience we ensure that projects are successfully completed – from the initial idea to the final construction.

We offer invaluable experience and excellence in dealing with the most challenging traffic planning and traffic infrastructure of all kinds.

Fields of work

Consulting

  • Project preparation
  • Terms of reference
  • Reviews and revisions of project documentation
  • Traffic safety assessment

Service

  • VISE

Studies and research

  • Traffic studies
  • Traffic modelling (micro, meso, macro)
  • Master plans and sustainable urban mobility plans
  • Preliminary studies, conceptual designs and variant studies of all traffic infrastructure types
  • Traffic counts
  • Surveys
  • Mobility plans
  • Environmental studies
  • Studies of noise pollution
  • Accredited procedures of noise measurements
  • Economic and investment studies
  • Feasibility studies
  • GIS data analysis
  • Visualisations

Designing

  • Infrastructure
    • Roads
    • Railways
    • Ports
    • Airports
    • Energy supply
    • Utilities
    • Other
  • Structures
  • Designing with BIM technology
  • Planning of civil structures and buildings with static calculations
  • Hydrotechnical engineering
  • Geodesy

Vise

Vise

Vise

VISE - Virtual Infrastructure Simulation and Evaluation

VISE offers road section evaluation with »human in the loop« procedure already in the design phase. Real drivers test and evaluate the newly designed section in a safe, yet equally engaging environment in a driving simulator.

  • Detect and avoid creating dangerous sections of road in the design stage
  • Increase road capacity
  • Increase safety of autonomous vehicles integration
  • Saves time and money for investor / customers
  • Includes the end user during the design phase
  • Simulations of critical situations
  • Mobile simulator allows driving evaluation anywhere and with local population
  • Reduces internal and external operational costs
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References

We have carried out over 100 traffic, transport-economic, and environmental studies (noise, gases):

  • National traffic models of Slovenia, Croatia, and Slovakia

    • National traffic models of Slovenia, Croatia, and Slovakia

    Along with foreign partners, PNZ d.o.o. produced integrated, multimodal, four-level national traffic models for Slovenia, Croatia, and Slovakia. The models include all types of transport infrastructure and their characteristics, modelling traffic supply and conducting a survey in the field, acknowledgement of relevant socioeconomic indicators, the traffic network in Slovenia and the behaviour of traffic participants.

    Clients: Ministry of Infrastructure of the Republic of Slovenia; Ministry of the Sea, Transport and Infrastructure of the Republic of Croatia; Ministry of Transport, Construction and Regional Development of the Slovak Republic

    Years: 2012-2016

  • Meso- and macroscopic traffic simulations for the City Municipality of Ljubljana and the Ljubljana region

    • Meso- and macroscopic traffic simulations for the City Municipality of Ljubljana and the Ljubljana region

    In 2007, PNZ d.o.o. produced a macroscopic four-level traffic model of the Ljubljana region. In 2008, it was amended, calibrated, and validated for the area of the City Municipality of Ljubljana to correspond with the new spatial plan. In 2009, a detailed mesoscopic simulation dynamic traffic model was developed for the City Municipality of Ljubljana. In 2010, both models, the macroscopic and mesoscopic, were combined, or integrated, into a single comprehensive model. In 2009, using Dynameq, we developed an up-to-date macroscopic simulation model of dynamic traffic volume which represents an upgrade to Ljubljana’s strategic model. The purpose and goal of the 2011 traffic review was to determine the effects of the recommended long-term measures. 

    Client: City Municipality of Ljubljana

    Years: 2007-2011

  • Sustainable urban mobility plans for 16 Slovenian municipalities

    • Sustainable urban mobility plans for 16 Slovenian municipalities

    In 2016 and 2017, PNZ d.o.o. collaborated on the development of 16 sustainable urban mobility plans (SUMPs). SUMPs are strategic documents that dictate action plans for an effective sequence of measures in the field of transport. The aim of SUMPs is to change mobility habits and increase the use of public transport and bicycles, as well as to encourage walking in the city.  All SUMPs were carried out under the Guidelines for Preparation of Sustainable Urban Mobility Plans. PNZ d.o.o. took part in every step of producing the SUMPs, from analysing traffic and determining each project’s vision and goals to specifying measures in accordance with the goals and a framework for monitoring and evaluation. In all phases of the project, PNZ d.o.o. ensured the participation of the public, and different stakeholders.

    Clients: City Municipalities of Nova Gorica, Velenje, Kranj, Celje and others

    Years: 2016-2017       

  • Mobility plan for the City Municipality of Velenje and Šalek Primary School

    • Mobility plan for the City Municipality of Velenje and Šalek Primary School

    PNZ, within the framework of the Velenje SUMP, developed a mobility plan for the City Municipality of Velenje and the Šalek Primary School. The goal was to create a strategy of mobility management on the organizational level that is in line with the goals of sustainable mobility with a choice of (especially soft) measures and systematic monitoring and evaluation. The task encompassed analysis of the current situation (accessibility), preparation and analysis of surveys of travel habits, setting goals, proposing measures with an action plan, and a plan of monitoring and evaluation.

    Client: City Municipality of Velenje

    Year: 2017    

  • Economic feasibility of the A1-Slovenj Gradec section of the third development axis

    • Economic feasibility of the A1-Slovenj Gradec section of the third development axis

    PNZ d.o.o. conducted a study to determine the economic feasibility of the proposed construction of the section of motorway that would comprise the northern part of the third development axis from the A1 motorway to Slovenj Gradec. The area studied included all places that would be influenced along the proposed route of the third development axis. The study was composed of analysis of the current situation, modelling of the current and future traffic burdens, analysis of traffic safety, cost-benefit analyses of five scenarios, as well as sensitivity and risk analysis.

     

    Client: DARS d.d. (Motorway Company in the Republic of Slovenia)

    Year: 2015      

  • Evaluation of the steps taken towards the future Slovenian transport network

    • Evaluation of the steps taken towards the future Slovenian transport network

    In line with the requirements of the Resolution on the National Programme for the Development of Transport and Transport Infrastructure in the Republic of Slovenia, we developed alternative strategies, conducted an evaluation, and drafted a strategy proposal. The CETRA strategic traffic model, which is based on the national model PRIMOS, was used in the study, and the Railsys microscopic simulation model was used to analyse railway traffic. On this basis, crucial problems and issues were identified which must be tackled using various measures. Also carried out were different scenarios of the development of Slovenian transport infrastructure, which included measures we deemed necessary to be implemented for both traffic and environmental reasons by the years 2020 and 2030. On the basis of our evaluation we identified the most suitable steps to be taken in preparation for the National Programme of Construction of Slovenian Transport Infrastructure.

    Client:  Ministry of Infrastructure and Spatial Planning

    Year: 2014

  • Expert report for the Ljubljana railway hub within the framework of the RAILHUC project

    • Expert report for the Ljubljana railway hub within the framework of the RAILHUC project

    PNZ d.o.o. contributed technical support to the RAILHUC project, the aim of which was to find a solution for the improvement of connections among the main hubs along the TEN-T corridors. We prepared an expert report on the Ljubljana railway hub, which included infrastructure analysis, an analysis of traffic flows and services, a public transport plan and positioning of services, present and potential passenger numbers and key traffic points, and modelling of the hubs’ achievable level of traffic. A railway traffic model was developed for the greater Ljubljana region, which makes it possible to do modelling in more detail of the railway infrastructure, timetables, and simulations of capacity numbers.

    Client: Regional Development Agency of the Ljubljana Urban Region

    Year: 2003       

  • Preparing and conducting a survey of households regarding mobility habits of the population of Slovenia on a nationwide level

    • Preparing and conducting a survey of households regarding mobility habits of the population of Slovenia on a nationwide level

    The main task of this project was to prepare and conduct a survey on the mobility habits of households in Slovenia, including an analysis of the results. It was necessary to cover households from the entire country and all types of transport. Trips were examined by the journey type, how long the journey lasted, its distance, and the reason for the journey. The quality and scope of the data was sufficient to upgrade the national traffic model and development of new, more detailed models of the behaviour of users of the transport system, including pedestrians and cyclists.

     

    Client: Ministry of Infrastructure

    Year: 2016

  • Traffic review of the connection to the Hofer supermarket and new residential development in Domžale

    • Traffic review of the connection to the Hofer supermarket and new residential development in Domžale

    For a private client a review was conducted of the flow of traffic in an intersection upon the inclusion into the wider road network of new connections for a supermarket and residential neighbourhood. The review was conducted for the morning and afternoon rush hours in 2015, and included both macroscopic and microscopic models, examining personal car and freight transport.  A concept design for the improvement of the intersection was produced.

    Client: Kranjska investicijska družba d.o.o.

    Year: 2006

  • Operational noise monitoring of Slovenian motorways and major regional roads

    • Operational noise monitoring of Slovenian motorways and major regional roads

    Working as the lead partner, PNZ d.o.o. carried out operational noise monitoring for the entire network of motorways and dual carriageways managed by DARS d.d. in Slovenia. The network covered in the project totalled 607 km of motorways and dual carriageways, 166 km of entrance and exit ramps, and 23 km of junctions. The operational monitoring included a model calculation of the burden on surfaces and buildings with noise refuges impacted by the motorway network, and a measurement of the impact of noise pollution on the environment in 91 locations. We also created a database of existing noise barriers and embankments, as well as existing and planned passive noise protection of buildings.

    Client: DARS d.d. (Motorway Company in the Republic of Slovenia)

    Year: 2014

  • Noise pollution study with a proposal for noise barriers and a report on passive noise protection for the project documentation of the Koseze–Kozarje motorway section (widening to six lanes)

    • Noise pollution study with a proposal for noise barriers and a report on passive noise protection for the project documentation of the Koseze–Kozarje motorway section (widening to six lanes)

    As part of the study, a proposal was presented for measures to combat noise pollution in certain areas that would result from the planned six-lane motorway. These measures included ones at the source (less noisy SMA asphalt and lower speed limits), ones aimed at preventing the spread of the noise (noise barriers), and ones on buildings (passive noise protection). The study was based on an acoustic model, measurements, and forecasts of noise pollution. As part of the report on passive noise protection, a survey was carried out of buildings with noise refuges, measurements were taken of existing noise insulation on building facades, and a proposal was put forth for redevelopment, including an assessment of the cost.

    Client: DARS d.d. (Motorway Company in the Republic of Slovenia)

    Year: 2014

  • Noise study with a proposal for noise barriers for the purpose of reviewing changes to the municipal planning document of the Municipality of Grosuplje for the Velika Stara Vas area

    • Noise study with a proposal for noise barriers for the purpose of reviewing changes to the municipal planning document of the Municipality of Grosuplje for the Velika Stara Vas area

    The study represents a professional basis for the assessment of noise pollution due to traffic on the A2 motorway for the purpose of bringing about a change to the municipal planning document of the Municipality of Grosuplje. The clients submitted to the municipality an initiative for a change in land use. With the study, we demonstrated whether the area of expanded land use for the purpose of constructing individual buildings on the basis of the initiative would still be outside the area of excessive noise pollution generated by the motorway. The forecast was produced using traffic data over a 20-year period, previously there had been a validation of the acoustic model on the basis of numerous short-term and one long-term measurement of noise pollution.    

    Clients: Anton and Andrej Podržaj

    Year: 2015

We have carried out over 100 traffic, transport-economic, and environmental studies (noise, gases):
We have secured project documentation for over 100 road, railway, port, airport, and energy supply infrastructure projects:

We have secured project documentation for over 100 road, railway, port, airport, and energy supply infrastructure projects:

  • Motorway between the A1 in Slovenia and the A7 in Croatia

    • Motorway between the A1 in Slovenia and the A7 in Croatia

    PNZ completed the construction-technical part of the study on the A6 Postojna/Divača–Jelšane motorway between the A1 Šentilj–Koper motorway and the A7 Rupa–Reka motorway in Croatia. The study focused on an area totalling 330 km2 and preliminary variants of the planned route. The guidelines for the study were set by over 20 spatial planning authorities. When determining the optimal route for the motorway, 105 km of possible routes were studied, of which the only acceptable one ran from Ilirska Bistrica through the Košana valley to Postojna.

    The road is a typical four-lane motorway with hard shoulders and a length of 37.97 km. Planned were four new access and exit points (in Selce, Košana, Ilirska Bistrica and Jelšane), two accompanying structures, a motorway base, two tunnels (Osojnica and Kilovče), over 110 additional civil structures (viaducts, ecoducts, cut-and-cover tunnels), the relocation and protection of numerous utility lines, and noise barriers. The estimated investment totalled 994 million euros, including VAT.

    Client: DARS d.d. (Motorway Company in the Republic of Slovenia)  

    Years: 2010-2015

  • Motorway connection from the A1 to Slovenj Gradec (third development axis)

    • Motorway connection from the A1 to Slovenj Gradec (third development axis)

    PNZ led and developed the main body of the preliminary designs for the four-lane motorway between the A1 Šentilj-Koper motorway at Šentrupert and Slovenj Gradec, which will form the base of the northern part of the third development axis, connecting the Koroška region with the motorway system. 

    The 31.5-km stretch of four-lane motorway will include eight grade-separated access and exit points and two two-lane link roads that are 1.5 km and 1.9 km long. Along the route of the aforementioned roads are six tunnels (five of which are double tunnels), four cut-and-cover tunnels, 26 viaducts, eight bridges, 11 overpasses, 15 underpasses, one underpass for animals, and many support and reinforcing structures. In addition to the above arrangement, also planned are water management facilities, municipal energy and telecommunications lines, noise barriers and other measures.

    The total investment has been estimated at 229.7 million euros, including VAT.

    Client: DARS d.d. (Motorway Company in the Republic of Slovenia) 

    Years: 2009-2017 

  • High-speed Venice–Ljubljana railway: Trieste–Divača section

    • High-speed Venice–Ljubljana railway: Trieste–Divača section

    PNZ developed a preliminary design for the Slovenian stretch of the new Trieste–Divača railway, which is the cross-border section of the high-speed Venice–Ljubljana railway that runs between Italy and Slovenia. This section constitutes a key element of two crucial corridors (the Mediterranean and Baltic–Adriatic) of the Trans-European Transport Network (TEN-T) on the Lyon–Trieste–Divača (Koper)–Ljubljana–Budapest–Hungarian-Ukrainian border axis.  

    The railway will consist of two electrified, high-speed tracks (up to 250 km/h) intended for passenger and freight traffic. The Slovenian section is approximately 11 km long, of which 3.8 km run through tunnels. Foreseen as part of the project are structures and facilities of railway structural subsystems, numerous road diversions, civil structures (viaducts, tunnels, cut-and-cover tunnels, ecoducts), the relocation and protection of a number of utility lines, and noise barriers. Investment estimates total 217 million euros, including VAT.

    Client: Slovenian Infrastructure Agency

    Year: 2015  

  • Maribor–Šentilj railway

    • Maribor–Šentilj railway

    In the years 2016 and 2017, PNZ d.o.o. collaborated on the implementation plans for the project to upgrade the Maribor–Šentilj–national border rail line. The investor in the project is the Slovenian Infrastructure Agency. As part of the project, PNZ led the work on the section of the track between Šentilj and the Slovenian–Austrian border, around 1,600 metres of single-track rail, including the approximately 250-metre-long Šentilj tunnel, three box culverts under the train track and a pedestrian overpass near the St. Šentilj church in Šentilj.

    Client: Slovenian Infrastructure Agency

    Years: 2016-2017   

  • Building information modelling (BIM) of the expansion project for the Karavanke motorway tunnel

    • Building information modelling (BIM) of the expansion project for the Karavanke motorway tunnel

    PNZ is actively involved in the process of developing advanced technologies of modelling and planning transport infrastructure. In 2016 and 2017, PNZ took part in developing a BIM model for a second tube of the Karavanke tunnel as part of the expansion project of the Karavanke motorway tunnel on the A2 Karavanke–Obrežje motorway. The project’s investor is the Motorway Company in the Republic of Slovenia (DARS d.d.). In addition to its regular work on the project using BIM technology, PNZ arranged all road furniture as well as four road diversions. 

    Client: DARS d.d. (Motorway Company in the Republic of Slovenia)  

    Years: 2016-2017

  • Numerous road infrastructure projects

    • Numerous road infrastructure projects

    • relocation of the G2-108 main road in Zgornje Log, near Litija: a 1.4-km stretch of road with an overpass crossing the railroad tracks and other associated developments (completed September 2015)    
    • relocation of the R1-219 main road in Spodnja Brežnica, near Poljčane: a 1.1-km stretch of road with an overpass crossing the railroad tracks, the removal of two railway level crossings, and other associated developments (under construction)    
    • relocation of the G2-104 main road near the Ljubljana Jože Pučnik Airport in Brnik: a 2.4-km stretch of road with three roundabouts (two of which are spiral roundabouts), long-distance cycle paths, and other associated developments (completed January 2018) 
    • R3-634 northern bypass road in Bled: a 2.5-km-long road with intersections, access points, parking areas, cycle lanes, water management and other associated developments (under construction) 
    • R2-209 southern bypass road in Bled: a 3.3-km-long road with seven intersections (one of which is a spiral roundabout), a tunnel (283 metres), a cut-and-cover tunnel (468 metres), a viaduct, two bus stops, and other associated developments
    • a stretch of the G2-108 Hrastnik–Zidani Most road measuring 8.1 km and a 0.8-km-long diversion of the G1-5 Rimske Toplice–Zidani Most–Radeče road with four bridges measuring from 132 metres to 235 metres, four overpasses and two underpasses crossing the railroad tracks (national spatial plan has been accepted)
  • Numerous railway infrastructure projects

    • Numerous railway infrastructure projects

    • extension of the industrial tracks 45 and 46 at the head of Pier II at the Port of Koper totalling 105 metres in length (six tank wagons, each 17 metres long) (detailed design)
    • upgrade of section from Šentilj to the national border on the No. 30 Zidani Most–Šentilj–national border main line: a 1.6-km stretch with a tunnel (250 metres), pedestrian overpass, three culverts and other associated developments (detailed design)
    • new construction of the light rail Trieste–Koper line with tram tracks along the coastal road from Koper to Izola (conceptual design)
    • upgrade of the Nova Gorica–Sežana section of the regional No. 70 Jesenice–Sežana rail line, with an entirely new arrangement of the stops and stations (platforms and access to them, parking lots, etc) (conceptual design)
    • removal of two railway level crossings on the No. 30 Zidani Most–Šentilj–national border main line near Poljčane: 562.4 Poljčane in 563.1 Zg. Brežnica with an entirely new arrangement of upper and lower structures
    • Divača railway hub, the main element of which is the 2.76-km-long line connecting the existing Divača–Koper line and the planned second Divača–Koper line to the south with the high-speed Venice–Ljubljana line to the north, and other associated developments (conceptual design)

We have secured project documentation for over 100 civil structures (viaducts, bridges, retaining walls), buildings, and hydrotechnical studies and solutions:

  • Footbridge across the Kamniška Bistrica in Homec

    • Footbridge across the Kamniška Bistrica in Homec

    PNZ arranged the project documentation for the footbridge that runs over the Kamniška Bistrica in Homec. The bridge is 40 metres long and has a maximum span of 35 metres. It is an integral prestressed frame construction, and was built using scaffolding. 

    Client: Municipality of Domžale

    Year: 2017

  • 4-01 overpass crossing the railway in Litija

    • 4-01 overpass crossing the railway in Litija

    PNZ arranged the project documentation for the overpass that crosses the railway in Litija. The overpass is 162 metres long with a maximum span of 30 metres. It is a prestressed deck construction with two girders (a composite structure across the railway + a monolithic construction of prestressed concrete), and was built using scaffolding.

    Clients: Ministry of Infrastructure of the Republic of Slovenia, Slovenian Infrastructure Agency

    Year: 2015       

  • 4-1 ''Pasarela'' pedestrian overpass crossing the Koper–Lucija motorway

    • 4-1 ''Pasarela'' pedestrian overpass crossing the Koper–Lucija motorway

    PNZ arranged the project documentation for the pedestrian overpass that crosses the Koper–Lucija motorway. The overpass is 236 metres long with a maximum span of 23.90 metres. It is a prestressed deck construction with a single girder, and was built using scaffolding.

    Client: DARS d.d. (Motorway Company in the Republic of Slovenia) 

    Year: 2009

  • PZ-03 retaining wall on the Koper–Lucija highway

    • PZ-03 retaining wall on the Koper–Lucija highway

    PNZ arranged the project documentation for the PZ-03 retaining wall, which is 145 metres long with a maximum height of 12 metres. It is an anchored retaining wall, and was built using staged construction.

    Client: DARS d.d. (Motorway Company in the Republic of Slovenia) 

    Year: 2009  

  • Container repair station at the Port of Koper

    • Container repair station at the Port of Koper

    PNZ arranged the project documentation for the container repair station at the Port of Koper. The structure measures 60 by 20 metres and has a maximum height of 12.60 meters. It is a steel frame, prefabricated construction.

    Client: Port of Koper (Luka Koper d.d.)

    Year: 2017

  • Expansion of the Šmarje Sap motorway access and exit point: a plan for surface water drainage, water management, water supply and sewerage

    • Expansion of the Šmarje Sap motorway access and exit point: a plan for surface water drainage, water management, water supply and sewerage

    As part of the project to expand the Šmarje Sap motorway access and end exit point, utility lines were repositioned, drainage from the motorway and access/exit ramps was arranged, and maintenence and cleaning of the surface water drains was set up. There will be further work on the Rupe drainage field with an additional hydrotechnic well with a diameter of 400 mm and regulated drainage of the Gajnica stream with all water management planning.

    Client: DARS d.d. (Motorway Company in the Republic of Slovenia) 

    Years: 2013-2015  

  • Wastewater treatment plant at the Gotenica Supply Centre

    • Wastewater treatment plant at the Gotenica Supply Centre

    This project included a plan for a system of municipal wastewater treatment and drainage for the Gotenica Supply Centre with a 350 PE plant.

    Client: Ministry of the Interior

    Year: 2012 

  • Supply of drinking water for the coastal region and Kras

    • Supply of drinking water for the coastal region and Kras

    The project dealt with the construction of a water supply network that would ensure additional capacity for the coastal region and Kras from two new sources (Klariči and Bistrica). To that end, there is a plan to build a transport water distribution system NL DN 350 mm that will be over 14 km long (the total length of all pipelines will be 21 km) along with all necessary work on existing structures and construction of a new Kraljevi Hrib pump station with a flow of 100 l/s.

    Client: Municipality of Sežana

    Year: 2013

  • Poljčane overpass: a hydrologic-hydraulic study, a water management plan, a water supply plan

    • Poljčane overpass: a hydrologic-hydraulic study, a water management plan, a water supply plan

    Due to new road construction – the relocation of the R1-216/1236 Slovenska Bistrica–Poljčane road and the new layout of the grade-separated railway crossing along the No. 30 Zidani Most–Šentilj–national border rail line in Spodnja Brežnica, near Poljčane – it was necessary to assess the impact the new roads would have on existing flood conditions. Based on the results of the mathematical models of water levels, maps were developed showing flood danger and the levels of danger as well as defined mitigating measures. In addition, PNZ arranged all project documentation for the road and overpass.

    Clients: Ministry of Infrastructure of the Republic of Slovenia, Slovenian Infrastructure Agency

    Year: 2016         

  • Expansion of the Karavanke motorway tunnel: a water supply plan

    • Expansion of the Karavanke motorway tunnel: a water supply plan

    As part of the construction of a second tunnel tube through Karavanke and the associated section of motorway, it is necessary to build municipal infrastructure, including water supply infrastructure. The plan calls for this to be set up on the border south of the Karavanke border control station. In line with the plan, a water supply line was set up from the Sava with pipes 400, 200 and 150 mm in diameter attached to the structure of a new bridge. Additionally, PNZ arranged project documentation for the road, road signs, and BIM.

     

    Client: DARS d.d. (Motorway Company in the Republic of Slovenia) 

    Year: 2017  

We have secured project documentation for over 100 civil structures (viaducts, bridges, retaining walls), buildings, and hydrotechnical studies and solutions:

We offer assistance in organising projects, from terms of reference to reviews and revisions, from applications for the approval of design conditions and applications for building permits to acquiring operating permits.

Our clients

  • Domestic
  • DARS (Motorway Company in the Republic of Slovenia)
  • Slovenian Infrastructure Agency
  • Ministry of Infrastructure of the Republic of Slovenia
  • HSE - Slovenian Power Company
  • HESS - Slovenian Hydroelectric Power Company
  • Port of Koper
  • Slovenian Railways
  • City Municipality of Celje
  • City Municipality of Kranj
  • City Municipality of Ljubljana
  • Show all
  • City Municipality of Nova Gorica
  • City Municipality of Slovenj Gradec
  • City Municipality of Velenje
  • Municipality of Bled
  • Municipality of Brežice
  • Municipality of Hrastnik
  • Municipality of Izola
  • Municipality of jesenice
  • Municipality of Lendava
  • Municipality of Log-Dragomer
  • Municipality of Postojna
  • Municipality of Radovljica
  • Municipality of Ribnica
  • Municipality of Sevnica
  • Municipality of Tolmin
  • E.Leclerc Slovenija
  • Hofer Slovenija
  • IKEA
  • Lidl Slovenija
  • Poslovni sistem Mercator
  • Raiffeisen LEASING
  • Shell Adria
  • Spar Slovenija
  • Trans Felix
  • Foreign
  • Rijeka–Zagreb Motorway, Croatia
  • Belgrade Land Development Public Agency, Serbia
  • Gruppo Europeo di Interesse Economico Linea Ferroviaria Trasfontaliera Trieste – Divača, Italy
  • Institut IGH d.d., Croatia
  • Mercator-S d.o.o., Serbia
  • Ministry of the Sea, Transport and Infrastructure, Croatia
  • Ministry of Transport, Construction and Regional Development, Slovakia
  • City Municipality of Bad Radkersburg, Austria
  • City Administration for Construction Land and Investments, Novi Sad, Serbia

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Contact information

Main administrative office
Helena Kopač
secretarial office
+386 1 589 65 14
pnz@pnz.simam

Director’s office
Andrej Jan, u.d.i.g
director

Saša Hribar
Director’s secretary
+386 1 589 65 19
sasa.hribar@pnz.simam

Infrastructure
Marko Jelenc, BSc in Civil Engineering
+386 1 589 65 40
marko.jelenc@pnz.simam

Traffic
mag. Gregor Pretnar, MSc in Civil Engineering
+386 1 589 65 23
gregor.pretnar@pnz.simam

Noise
Miha Zupančič, BSc in Civil Engineering
+386 1 589 65 26
miha.zupancic@pnz.simam

Geodesy
Gorazd Drofenik, BSc in Civil Engineering
+386 1 589 65 22
gorazd.drofenik@pnz.simam

Hydrotechnical engineering
Andrej Bogataj, BSc in Civil Engineering
+386 1 589 65 16
andrej.bogataj@pnz.simam

Construction
Ervin Jezovšek, BSc in Civil Engineering
+386 1 589 65 31
ervin.jezovsek@pnz.simam

Registration number: 5459966000
 Tax identification number: SI15531058
Bank account number: IBAN SI56 2900 0000 1823 748 (UniCredit Banka Slovenija d.d.)
 IBAN SI56 2420 1900 3328 129 (KBS banka d.d.)

PNZ svetovanje projektiranje d.o.o.
Vojkova cesta 65, 1000 Ljubljana
pnz@pnz.si